Telephone apparatus.



' F. W. WOOD.

TELEPHONE APPARATUS. APPLICATION FILED APR. 17,1907.

898,619. Patented Sept. 15,1908;

UNITED strAr ns rENT OFFICE.

FRANK I. 1100, ()l" N IZ\\'I()R'l NEWS. VIRGlNIA, ASSIUNOR TO CHARLES CORY AND JOHN (TORY, OF NEW YORK, Y.

TELEPHONE APPARATUS.

Specification of Letters Patent.

lfa'tented Sept. ,15, 1908.

Application filed April 17, 1907. Serial No. 368,666.

T 0 all who) it may concern:

Be it known that i, FRAxk W. \Yoon, a citizen of the United States, residing at Newport News, in the county of Warwick and btate of Virginia, have invented new and useful improvements in 'lelephone Apparatus, of which the following is a specification. My invention relates to telephones, and more pz'irticularly to that type in which the receiver magnets are contained in the casing of the instrument, with the transmitter. Heretofore in such apparatus, -it has been common to "provide a numthpiece or speaking tube extending from the transmitter, and one or more trumpets or ear tubes extending from the receiver. It has been found in practice, however, that, through inadvertence, the person using the instrument will frequently become confused, and attempt to speak into the trumpet, instead of the mouth piece, and vice versa, and thus cause himself great annoyance. Y

It is the primary object of this invention, therefore, to so arrange the trumpet and mouthpiece that it will be impossible to make a mistake in the use of the instrument.

A further object of the invention is to simplify and improve generally the construction of such apparatus.

With the above and other objects in view, my invention consists in the construction and arran ement of parts hereinafter described, and iilustrated in the accompanying drawings, in which:

Figure 1 is a central section through my improved telephone instrument. 2 is a front elevation thereof, and Fig. 3 is a plan View of the receiver ease and contained ma nets. 4

Referring to the drawings in detail, 1 represents the outer box or casing of the instrument. This is provided with lugs, 2, for attachment to a suitable support.

The casing is provided with a removable cover 3, secured thereto by screws, and attached to this cover, and preferably formed integral therewith is the mouthpiece and trumpet. The trumpet consists of a born or megaphone, having a large flarin mouth, 4,

and a tapering, upwardly curved body por tion 4 terminating in a radial flange.

The mouthpiece 5 has a flaring open end, lyingsnbstantially in the plane of the end of the trumpet and concentrically arranged with respect to the same. The mouthpiece moved as a single piece,'- and when so removed, ready access may be had to the electrical mechanism in the casing, for inspection or repair. The usual guard 6, is located in the mouthpiece.

7 indicates the receiver case. This consists of a cup-shaped member, provided, as shown in Fig. 3 with lugs, 7 for attachment to the main casing. Secured within the case by means of screws 11, are the receiver mag nets, 8, carrying the core 9, and coil 10. An annular ring I2, is screwed into the end of the 'asing 7, and servesto support the diaph 'agm 13, between the same and the dished, diskshaped member 14, which is secured thereto by means of screws 16. This disk-shaped member 14 is provided with a central opening which registers with the end of the trumpet 1", and a washer 15, of soft material, is placed between. such member and the flange on the end of the trumpet.

20 represents a cup-shaped member, containing the usual transmitter 21 and secured to the main casing by lugs (not shown). A

ring 23, lits within the member or ,case'ZZU',

and supports the working diaphragm 22, and a guard diaphragm 24, in the usual manner. A central opening 25, in the end of case 21) registers with the end of he; mouthpiece 17, and a washer 1S),'of soft material is placed between the case and flange 18, of the mouthpiece, to cushion the. parts.

A push button 26, projecting through the front of the casing serves to control the talking circuit, by means of contact springs 27, connected to binding posts 28, secured to a block of insulation supported by a bracket 2). A conduit 30 incloses the wires (not shown) which. lead outi'rom the instrument.

With the above constructimi, it is obvious that a person using the instrument, ill, on account of the concentric arrangement of the lllUHtllPlG'C. and trumpet, occupy the same position when speaking as when listening, and hence all chance of error is eliminated.

it will be seen, also, that .l have provided a tclcplmnic apparatus of exceedingly simple and compact construction, which is easy to assemble, inspect, or repair, and it is thought the numerous advantages of my invention will be readily appreciated by those skilled in the art. I

What I claim is 1. A tele honicapparatus comprising a concentrical y arranged mouth piece and trumpet, the one projecting through the wall of the other.

2. A telephonic apparatus comprising a casing, a removable front wall therefor'a mouthpiece and a trumpet formed integral with said wall, and with each other, and con centrically arranged.

3. A telephonic apparatus comprising a casing, and a mouthpiece and trumpet formed integral with each other, and mounted in said casing, the rear ends of said mouthpiece and trumpet lying in planes substantially at right angles to each other.

4. A tele honic apparatus comprising a trumpet an( a mouthpiece, formed integral, and concentrically arranged, the one projecting through the wall of the other.

5. A tele honic apparatus, comprising a trumpet wit flaring mouth and curved body extending to the receiver, and a mouthpiece concentrically arranged therein, and havin a body portion extending through the curved wall thereof to the transmitter.

6. A telephonic apparatus, comprising a ,main casing, a receiver, a case therefor, a

to each other, and a trumpet and mouth piece, respectivel extending from said cases and concentrical y arranged, one within the other.

'7. A telephonic apparatus comprising a.-

main casing, a receiver, a case therefor, a trumpet extending fromsaidcase through said main casing, a transmitter, a case therefor, and a mouthpiece extending from said case throughsaid trumpet.

.8. In a telephonic apparatus, a casing, the front wall of which is removable, a trumpet having a curved body extending through sai front wall and secured thereto, a-receiver communicating with said trumpet, a mouth piece disposed within said trumpet. extendmg through the curved wall thereo and secured thereto, and a transmitter communicatin with said mouthpiece.

. 9. in a telephonic apparatus, a main casing, a receiver casing located within the same,

'n'esses.

FRANK W. WOOD.

Witnesses:

E now. ROBERTS, M. E. WEEKS- 

